It's called the Kardashian effect.

When anyone of these reality star sisters endorses something, everyone is down to try it.

So of course we had to check out what is now publicly known as one of Kourtney Kardashian's personal beauty bag favorites.

We hear that mother-again-to-be and oldest sister Kourtney Kardashian revealed one of her must-have beauty products.

"I am slowly changing my beauty products over to safer choices," Kourtney revealed to the press.

Despite having two little ones and one on the way, this busy Kardashian has still made time for keeping up with what's in beauty wise.

"I love organic coconut oil instead of lotion for my body, which I also use on the kids," the star dished. Read more on the benefits of coconut oil and oil pulling on our site!

"I ditched deodorant and used nothing for a while, but have now found Lavanila Healthy Deodorant, which is great," said Kourtney.

So what is Lavanila Deodorant? Completely free of Aluminum, Parabens, Propylene Glycol, Talc, Phthalates and Triclosan, it's a safe and effective way to fight odor.

The deos are available in these luxurious scents: Vanilla Grapefruit, Vanilla Summer, Fresh Vanilla Lemon, Pure Vanilla, Vanilla Lavender, and Vanilla Blackberry.

The multi-tasking formula uses a health-promoting beta-glucan technology packed with anti-oxidants, active botanicals and essential oils to not only fight odor, but condition, soothe and nourish the skin.

Check out the now Kardashian endorsed brand at Lavanila.com. And these deodorants aren't priced for the stars. These budget-friendly finds are available at $14, and a travel size for $8.

Ready to try Kourtney's personal pick? Tell us with a note below!